Molten salt film electrolytic bath

A molten salt and electrolysis device technology, applied in the direction of electrolysis components, electrolysis process, diaphragm, etc., can solve problems such as undesired physical properties, toxicity, etc., and achieve the effects of simple electrode replacement/repair, reduced distance, and high specific productivity

Pending Publication Date: 2022-06-07
LI METAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In many cases, the oxides, chlorides or fluorides of the electrolyte or the desired product metal either have undesirable physical properties (e.g. toxicity, hygroscopicity, corrosiveness, etc.) or due to other reasons (cost, availability, supply security, competing uses, difficulty of manufacturing, etc.)

Method used

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  • Molten salt film electrolytic bath
  • Molten salt film electrolytic bath
  • Molten salt film electrolytic bath

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Embodiment Construction

[0144] Various apparatuses or methods are described below to provide examples of embodiments of each claimed invention. Any embodiments described below do not limit any claimed invention, and any claimed invention may encompass processes or apparatus other than those described below. The claimed invention is not limited to a device or method having all of the features of any one of the devices or methods described below, or to features common to multiple or all of the devices described below. The apparatus or method described below may not be an embodiment of any claimed invention. Any invention described below that is not disclosed in the apparatus or method claimed in this document may be the subject of another protective instrument such as a continuation patent application, and the applicant, inventor, or owner does not intend by the disclosure herein and abandon, reject or dedicate any such invention to the public.

[0145] Molten salt electrolysis and electrolysis cells...

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Abstract

A molten salt membrane electrolysis device may include an anolyte chamber containing a molten salt anolyte that mainly includes a chloride salt and a lithium carbonate (Li2CO3) feed material. The first electrode assembly and the second electrode assembly are respectively provided with corresponding anodes; a cathode enclosure proximate the first anode within the anolyte compartment and in fluid contact with the molten salt anolyte, and having a primary transfer portion including a porous membrane; and a cathode located within the first catholyte compartment such that the primary transfer portion is disposed between the respective anode and cathode. The power supply may be configured to apply a potential between the first anode and the first cathode sufficient to initiate electrolysis of lithium carbonate and greater than a potential required to initiate electrolysis of LiCl.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of US Provisional Patent Application Serial No. 62 / 878,444, filed July 25, 2019, the entire contents of which are incorporated herein by reference. technical field [0003] In one aspect of the present invention, the present invention relates to molten salt electrolysis, in particular to an electrolysis apparatus for molten salt electrolysis and a method for producing lithium metal from lithium carbonate. Background technique [0004] Molten salt electrolysis has been widely used for over a hundred years, including the Hall-Heroult method for aluminum, the Dow and IG Farben methods for magnesium, and the Downs method for alkali metals. Most commercial-scale molten salt electrolysis methods use chloride or fluoride electrolytes because these electrolytes are the solvents that facilitate the electrolytic deposition of the target metal from oxides, chlorides, or other compounds of the ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/02C25C7/02C25C7/04
CPCC25C3/02C25C7/005C25C7/04
Inventor 梅西耶·乌尔班·贾斯特热布斯基蒂莫西·乔治·约翰斯顿
Owner LI METAL CORP
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